Work-support for shoe-nailing machines



R. KONYTE ZKY. 4 WORK SUPPORT FOR SHOE .NAILING MACHINES.

v- APPLICATION FILED OCT- 27. 1920.

1, ,557, Patented Nov. 29,1921.

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- port for use in connection UNETED STATES earner orifice.

ROBERT KONTEZKY, OF ROCHESTER, NET/V YORK.

WORK-SUPPORT FOR SHOE-MAILING Machines.

To all whom it may concern:

Be it known-that 1, ROBERT KoN'rEzKY, a citizen of the Republic of Germany, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Work- Supports for Shoe-Nailing 'Machines, of which the following isa specification.

The object of this inventionis to provide a new and improved form of work supwith shoe nailing machines. f

This and other objects of. this invention will be fully illustrated in the drawing, described in the specification and pointed out in the claims at the end thereof.

In the accompanying. drawing:

Figure 1 is a side elevation of a portion of a shoe nailing machine with my work support provided thereon.

Fig. 2 is a detail perspective view of the work support.

Fig. 3 is a horizontal sectional view through a portion of the support and the part of the machine to which it is fastened,

' the section being taken on the line 33- of Fig. 1.

Fig. 4 is a vertical sectional view of the bearing of the work support, the section being taken on the line 4e 4i of Fig. 3.

In the several figures of the drawing, like reference numerals indicate like parts.

In the drawing, reference numeral 1 indicates'the base and upright of the nailing machine for which the work support forming the subject matter of the present invention is adapted. The upright 1 has a short vertical projection 2 formed thereon in which the standard 3 is mounted. A sleeve 4 is mounted to slide on the standard 3 and is raised and lowered thereon by means of the pinion 5, mounted on the second sleeve 6, located below the sleeve 4. The pinion 5 meshes with the rack 7 cut into one side of the standard 3 and provided on the outside of the sleeve 6. v

The sleeve 4 has the sleeve 9 formed integrally therewith and parallel thereto, in which the work support proper is mounted. This work support comprises the shank 10 having a fork 11 formed on the lower end thereof. The shank 10 is provided with a series of holes 12 placed in a vertical row one on top of the other. A pin 13 is adapted to engage into one of these holes and rest on the upper edge of the sleeve 9 in Specification of Letters Patent.

Patented Nov. 29, 1921.

Application filed October 27, 1920. Serial at. 420,040,

order-to hold the shank in'the desired eleva'tion on the machine. The holes 12 allow for vertical adjustment of the work support'in the sleeve 9' in that the pin 13 may be placed into any one of the holes 12.

Thefork 11 ofthe work support is formed by the depending arms 14 and 15, the lower ends of which are curved'outward'lyto provide bearings for the shaft 16 to be-mounted therein. The rear of the fork 11' with its arms 14rand'15 is curved inwardlyin Y orderv to have the cylindrical projection "2 of the frame of the nailing machine fit snugly against it and provide a firm support for the lower portion of the back of the support againstthe frame of the nailing machine. 1 i j Mounted to swing in the fork 11 is the horn 17 of the work support. This, horn is curved inwardly at the bottom to engage between the arms 1% and 15 of the fork'11.

In this inwardly curved end of the horn 17 is provided a bearing '18 for the shaft 16 to pass therethrough and, support the horn 17 in the fork 11. The bearing 18 is widened at each end thereof so that-only a small portion in the middle of the bearing makes close circumferential contact with the shaft.

This permits the bearing to rock so that the horn'can be rocked laterally for a limited'distance. In addition to this lateral motion, thehorn may also be swung outthe bearing 18 permits a free swinging movement of the horn in this direction.

F or the purpose of holding the horn in that when the horn is moved laterally to one side or the other, the spring pulls the horn back to its normal position on the release thereof. This is also true when the horn is pulled forward away from the standard 10 in order to put one of the lasts on the support or take it off therefrom.

The lateral movement of the horn is essential because the nails must be driven into the heel of the shoe in a horse shoe shaped 'wardly away from the standard 10 as of. This universal movement of the horn secured by the widened bearing 18 allows the horn to move in this horse shoe shaped path and hold the last with its shoe rigidly against the nailer. r 7 As Wlll be seen from an inspection of Fig.

1, the upper end of the horn 17 which can ries the last of the shoe is bent so as to slightly slant away from the central axis of the standard 3. This is for the purpose of holding the shoe and the heel to be fastened thereon at a slight angle to the nail driving mechanism so that the nails are driven into the heel at'an angle. Owing to this angular alinement of the horn, the nails are always driven toward the inside of the shoe which not only helps to fasten the heel more tightly to the shoe but also prevents the nails from being driven so that their points project out from the side of the shoe and thus spoil either the heel or the sole to which it is to be fastened.

I claim:

1. In a work support for nailing machines, the combination of a shank, a fork formed on the lower end of said shank,

said fork having a concave back adapted to rest against a convex-upright, a shaft mounted in said fork, a horn, a bearing provided in said horn adapted to have said shaft pass therethrough, said' bearing having a narrow, circular throat in the'middle thereof and being widened at each end, said horn being adapted to rock laterally and swing forward and backward on said shaft in said fork. s p

2. In a work support for nailing machines, the combination of a shank, afork formed on the lower end of said shank, a shaft mounted in said fork, a horn, a bearingprovided in said horn adapted to have said shaft pass therethrough, said bearing having a narrow, circular throat in the middle thereof and being widened at each end, said horn being adapted to rock-laterally and swing forward and backward on said shaft in said fork, said shank being of'reduced diameter and having a series of holes therein and being adapted to engage a sleeve, and a pin adapted to engage in said holes above said sleeve to support said shank 1n sald sleeve.

In testimony whereof I affix my slgnature.

ROBERT KONTEZKY. 

